Hi Morten, interesting as I think this shows how much PC's can differ and also how 'great' the effect of tuning the PC can be, seen from a latency perspective. My setup is fully stable at the low ultrastream buffer of 30 using all bitrates/sample freq's. Also I've set the USB driver latency to minimum and all sample freq's in JPlay to 'directlink'. If low latency also really matters much for sound quality I really don't dare to say but it seems to be a general consensus at computeraudiophile.com and it of course says something about the number of 'distractions' (from other hardware interrupts, programs, processes, drivers, etc.) the PC faces during playback.
And yes, I've experimented much on the USB power. You can read all about it in the 'my system' topic on this forum. In short the Devialet needs the USB ground active and won't work without it. Not when starting playback or during playback (I tested both, music simply stops when I cut the USB ground or won't start at all when there's no USB ground connection active). My final setup is now: Kingrex uPower battery PSU feeding power externally to JCat USB interface card -> Kingrex Unanimous uCraft dual headed USB Y-cable (one connector signal+one power both connected to the JCat USB card) -> Devialet.
NB. I think you meant to write 'going from WASAPI to JPlay'.
And yes, I've experimented much on the USB power. You can read all about it in the 'my system' topic on this forum. In short the Devialet needs the USB ground active and won't work without it. Not when starting playback or during playback (I tested both, music simply stops when I cut the USB ground or won't start at all when there's no USB ground connection active). My final setup is now: Kingrex uPower battery PSU feeding power externally to JCat USB interface card -> Kingrex Unanimous uCraft dual headed USB Y-cable (one connector signal+one power both connected to the JCat USB card) -> Devialet.
NB. I think you meant to write 'going from WASAPI to JPlay'.
PS Audio P3, Shunyata ΞTRON Alpha Digital and HC/Furutech power cables, Paul Hynes SR7EHD-MR4, DIY Roon Server & Roon Endpoint running AudioLinux Headless, Phasure Lush^2 USB cable, Audioquest Diamond RJ/E ethernet, Uptone Audio etherREGEN, Mutec MC-3+ USB, Shunyata ΞTRON Anaconda Digital XLR AES/EBU, Devialet Expert 250 Pro CI, Nordost Tyr Reference LS cables, Von Schweikert VR-5 SE Anniversary Edition, Anti-Mode Dual Core 2.0, JL Audio Fathom F112. More detail here.
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